package com.atguigu.gulimall.product.service.impl;

import com.atguigu.gulimall.product.dao.BrandDao;
import com.atguigu.gulimall.product.dao.CategoryDao;
import com.atguigu.gulimall.product.entity.BrandEntity;
import com.atguigu.gulimall.product.entity.CategoryEntity;
import com.atguigu.gulimall.product.service.BrandService;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.CategoryBrandRelationDao;
import com.atguigu.gulimall.product.entity.CategoryBrandRelationEntity;
import com.atguigu.gulimall.product.service.CategoryBrandRelationService;


@Service("categoryBrandRelationService")
public class CategoryBrandRelationServiceImpl extends ServiceImpl<CategoryBrandRelationDao, CategoryBrandRelationEntity> implements CategoryBrandRelationService {

    @Autowired
    BrandDao brandDao;

    @Autowired
    CategoryDao categoryDao;

    @Autowired
    CategoryBrandRelationDao relationDao;

    @Autowired
    BrandService brandService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<CategoryBrandRelationEntity> page = this.page(
                new Query<CategoryBrandRelationEntity>().getPage(params),
                new QueryWrapper<CategoryBrandRelationEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public void saveDetail(CategoryBrandRelationEntity categoryBrandRelation) {
     Long brandId = categoryBrandRelation.getBrandId();
     Long catelogId = categoryBrandRelation.getCatelogId();

     BrandEntity brandEntity = brandDao.selectById(brandId);
     CategoryEntity categoryEntity = categoryDao.selectById(catelogId);

     categoryBrandRelation.setBrandName(brandEntity.getName());
     categoryBrandRelation.setCatelogName(categoryEntity.getName());

     this.save(categoryBrandRelation);

    }

  /**
   * 更新分类
   *
   * @param catId
   * @param name
   */
    public void updateCategory(Long catId, String name){
      this.baseMapper.updateCategory(catId, name);
    }

  @Override
  public void updateBrand(Long brandId, String name) {
    CategoryBrandRelationEntity relationEntity = new CategoryBrandRelationEntity();
    relationEntity.setBrandId(brandId);
    relationEntity.setBrandName(name);
    this.update(relationEntity,new UpdateWrapper<CategoryBrandRelationEntity>().eq("brand_id",brandId));
  }

  @Override
  public List<BrandEntity> getBrandsByCatId(Long catId) {

    List<CategoryBrandRelationEntity> catelogId = relationDao.selectList(new QueryWrapper<CategoryBrandRelationEntity>().eq("catelog_id", catId));
    List<BrandEntity> collect = catelogId.stream().map(item -> {
      Long brandId = item.getBrandId();
      BrandEntity byId = brandService.getById(brandId);
      return byId;
    }).collect(Collectors.toList());
    return collect;
  }





}